lastresort said:
It truly comes down to the culture of each subreddit, and plenty of mods are power-hungry weirdos. There are a few subs I participate in where the moderators happen to be actual professionals, and their moderation style has been courteous, helpful, and still strict. I also hang around a shitposting sub where ironic racist and ethnocentric jokes are thrown around constantly, and reddit sitewide automods sometimes hand out bans. I've been permabanned 2 times...and while I'll hold back from naming any particular politics so as not to step on toes here, you'd sooner wish me dead than snorting ivermectin.
Apart from country-specific subs, Reddit leans very, very American, and even inside those subs you'll run into brazen Americans dropping lines like "as an American [insert unimportant opinion]".
The absolute worst examples I've come across are truecrime, missingpeople, or crime podcast subreddits. They pull in every kind of attention whore and "well meaning" busybody, spread all sorts of asinine crap, and even go after the family and friends of missing people just to dig up information.
TLDR; if you understand your community, you'll get a lot of value out of it. Learn which highly polarizing subreddits to steer clear of.